不知何故 bù zhī hé gù

DEFINITIONS

  1. somehow

CHARACTERS

不 bù
HSK 1
no, not; un-; negative prefix
知 zhī
HSK 2
know, perceive, comprehend
何 hé
HSK 4
what, why, where, which, how
故 gù
HSK 3
ancient, old; reason, because